Xiaoliang Wu

TL;DR: An analysis of data from the Shenzhen Center for Disease Control and Prevention identified 391 SARS-CoV-2 cases and 1286 close contacts shows that isolation and contact tracing reduce the time during which cases are infectious in the community, thereby reducing the R.

TL;DR: This work shows that heightened surveillance and isolation, particularly contact tracing, reduces the time cases are infectious in the community, thereby reducing R.CoV-2's overall impact, however, its overall impact is uncertain and highly dependent on the number of asymptomatic cases.

TL;DR: The main symptoms on admission were fever and dry cough and age of 50 years or older, breathing problems, diarrhea, and longer time between the first medical visit and admission were associated with higher level of clinical severity.

TL;DR: Since the first family cluster of COVID-19 cases identified in Shenzhen in early January, most of the local transmission occurred within household contacts, and identifying the factors associated with household transmission is of great importance to guide preventive measures.